Responsive Grid System

I’ve only just started playing around with Decode, and I love it: it’s simple, content-oriented and easy to customize. Thank you!

Sorry if this is a dumb question, but I have very little experience in WP. Here it is: I’ve tried to implement grid system in my static front page, but it doesn’t seem to work. I set this up in another theme easily enough, but a mistake is not excluded, of course. Do you think anything in Decode could prevent this from working? Or maybe there’s another author-approved way to achieve similar end?

I’ll appreciate an advice.